create table
  public.books (
    id bigint generated by default as identity,
    name character varying not null,
    description text null,
    price integer not null,
    created_at timestamp with time zone not null default now(),
    constraint books_pkey primary key (id)
  ) tablespace pg_default;

class Books {
  final BigInt id;
  final String name;
  final String? description;
  final int price;
  final DateTime created_at;

  const Books({
    required this.id,
    required this.name,
    this.description,
    required this.price,
    required this.created_at,
  });

  static String get table_name => 'books';
  static String get c_id => 'id';
  static String get c_name => 'name';
  static String get c_description => 'description';
  static String get c_price => 'price';
  static String get c_created_at => 'created_at';
  static Map<String, dynamic> insert({
    BigInt? id,
    required String name,
    String? description,
    required int price,
    DateTime? created_at,
  }) {
    return {
      if (id != null) 'id': id.toString(),
      'name': name.toString(),
      if (description != null) 'description': description.toString(),
      'price': price.toString(),
      if (created_at != null) 'created_at': created_at.toUtc().toString(),
    };
  }

  static Map<String, dynamic> update({
    BigInt? id,
    String? name,
    String? description,
    int? price,
    DateTime? created_at,
  }) {
    return {
      if (id != null) 'id': id.toString(),
      if (name != null) 'name': name.toString(),
      if (description != null) 'description': description.toString(),
      if (price != null) 'price': price.toString(),
      if (created_at != null) 'created_at': created_at.toUtc().toString(),
    };
  }

  factory Books.fromJson(Map<String, dynamic> json) {
    return Books(
      id: BigInt.parse(json['id'].toString()),
      name: json['name'] as String,
      description:
          json['description'] != null ? json['description'] as String : null,
      price: json['price'] as int,
      created_at: DateTime.parse(json['created_at'].toString()),
    );
  }
}

  Books.table_name // "books"

// fetchedBooks is a typeof List<Books>
final books = await supabase
      .books
      .select("*")
      .withConverter((data) => data.map(Books.fromJson).toList());

final data = Books.insert(
  name: 'Learn Flutter',
  description: 'Endless brackets and braces',
  price: 2,
);
await supabase.books.insert(data);

final many_data = [
  Books.insert(
    name: 'Learn Minecraft',
    description: 'Endless blocks and bricks',
    price: 2,
  ),
  Books.insert(
    name: 'Description is optional',
    created_at: DateTime.now(),
    price: 2,
  ),
];
await supabase.books.insert(many_data);

final newData = Books.update(
  name: 'New Book Name',
);
await supabase.books.update(newData).eq(Books.c_id, 1);

await supabase.books.delete().eq(Books.c_id, 1);